CN104767596A - 一种无线通信系统及在其中使用的方法 - Google Patents

一种无线通信系统及在其中使用的方法 Download PDF

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CN104767596A
CN104767596A CN201510175652.3A CN201510175652A CN104767596A CN 104767596 A CN104767596 A CN 104767596A CN 201510175652 A CN201510175652 A CN 201510175652A CN 104767596 A CN104767596 A CN 104767596A
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mac pdu
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network controller
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张国栋
史蒂芬·E·泰利
史蒂芬·G·迪克
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InterDigital Technology Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/02—Buffering or recovering information during reselection ; Modification of the traffic flow during hand-off
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2612—Arrangements for wireless medium access control, e.g. by allocating physical layer transmission capacity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/10—Flow control between communication endpoints
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0069—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
    • H04W36/185—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection using make before break

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Communication Control (AREA)

Abstract

一种无线通信系统及在其中使用的方法。无线通信系统包括：多个节点B，节点B位于活动集中，每个节点B包括：接收器，配置成经由一个或多个EU信道从WTRU接收MAC PDU；调度器，配置成调度来自WTRU的EU传输；发射机，配置成向RNC发送成功接收到的MAC PDU；RNC，包括：再排序功能实体，配置成接收来自多个节点B中的成功解码MAC PDU的节点B的MAC PDU，抛弃从两个或更多个节点B接收到的MAC PDU复本，基于MAC PDU的序列号将MAC PDU再排序为关联的缓冲器中的队列中，使得队列中的MAC PDU包括从活动集的两个或更多个节点B成功接收到的MAC PDU且仅单个MAC PDU的复本存储在所关联的再排序缓冲器中，将再排序的MAC PDU传递至RLC协议层；公共上行链路调度器，配置成协调多个节点B间的EU调度。

Description

一种无线通信系统及在其中使用的方法
本申请是申请日为2004年11月2日、申请号为200480027032.5、名称为“软交接期间处理数据区块方法及装置”的中国专利申请的分案申请。
技术领域
本发明有关无线通信领域。更特别是，本发明有关处理如分频双工(FDD)或分时双工(TDD)的多信元无线通信系统中的数据区块。
背景技术
改善上链涵盖，产出及传输延迟的方法目前被检视于发行6(R6)通用移动电信系统(UMTS)研究项目″分频双工上链加强″脉络中的第三代伙伴计划(3GPP)中。
为了达成这些目标，广泛预期节点B(基地台)将承担调度及分配上链资源(实际信道)至使用者的责任。该原理是即使无线网络控制器保持粗略控制，节点B亦可以短期基础较无线网络控制器做更有效决定及管理上链无线资源。类似方法已于通用移动电信系统分频双工(FDD)及分时双工(TDD)模式中的发行5(R5)高速下链封包存取(HSDPA)中被采用。
亦设想若干独立上链被处理于的共享时间区段内的无线传输/接收单元(WTRU)及通用陆上存取网络(UTRAN)之间。此之一例为媒体存取控制(MAC)层混合自动重复要求(HARQ)或仅媒体存取控制层自动重复要求(ARQ)操作，其中各传输可能需不同传输数被通用陆上存取网络成功接收。为了限制对系统架构的影响，是预期媒体存取控制上的协议层不应被加强上链专用信道(EU-DCH)的引进所影响。被此引进的一需求为传递至无线链路控制(RLC)协议层的队列中数据。因此，类似下链中的高速下链封包存取操作，是需通用陆上存取网络再排序功能依据无线传输/接收单元无线链路控制实体所产生的队列来组织被接收数据块。
软交接宏观分集操作系需集中控制活动集(active set)内各信元中的上链传输。活动集可能包含复数个节点B。再传输被产生直到至少一节点B实现成功传输为止。成功传输并不被所有节点B保证。因此，因为任何一节点B内可能不能取得成功传输完成组，所以再排序成功传输无法完成。
发明内容
本发明有关软交接期间处理数据区块方法及装置。该装置可为无线通信系统，无线网络控制器(RNC)或集成电路(IC)。无线通信系统包含至少两个加强上链软交接节点B及一无线网络控制器。各节点B可解码被接收数据区块并转送具有解码结果，也就是周期冗余检查(CRC)的该被解码数据区块至该无线网络控制器。若无线网络控制器接收成功解码数据区块的至少一复本，则无线网络控制器可使用再排序功能实体成功处理被解码数据区块来提供队列中传递至较高协议层。若无线网络控制器接收一个以上复本的成功解码数据区块，则无线网络控制器抛弃额外成功解码数据区块复本。无线网络控制器为服务无线网络控制器(S-RNC)或控制无线网络控制器(C-RNC)。各节点B包含可处理加强上链专用信道功能的媒体存取控制实体。
附图说明
图1为依据本发明较佳实施例处理服务无线网络控制器中的数据区块的无线通信系统方块图。
图2为包含处理图1系统中数据区块的方法步骤的处理流程图。
图3为依据本发明替代实施例处理控制无线网络控制器中的数据区块的无线通信系统方块图。
图4为包含处理图3系统中数据区块的方法步骤的处理流程图。
具体实施方式
此后，″无线传输/接收单元″一词是包含但不受限于用户设备(UE)，移动台，固定或移动用户单元，呼叫器或可运作于无线环境中的任何其它类型装置。此后被称为″基站″一词是包含但不受限于节点B，地址控制器，存取点或无线环境中的其它类型接介装置。
如一般被应用至通用移动电信系统，CDMA2000(分码多重存取2000)及分码多重存取者，本发明可进一步应用至分时双工，分频双工及分时同步分码多重存取(TD-SCDMA)，但亦可设想应用至其它无线系统。针对CDMA2000，本发明可被实施于EV-DO(也就是仅有数据)及EV-DV(也就是数据及语音)。
软交接操作期间，较高层维持于加强上链信元的主动子集，对此加强上链专用信道是被维持于软交接宏观分集状态中。这些主动子集中的信元是被不同加强上链软交接节点B控制。
图1显示包含依据本发明较佳实施例操作的一服务无线网络控制器105及至少两个(2)加强上链软交接节点B110(110A…110N)的无线通信系统100。无论有无软交接，各无线传输/接收单元均具有一个或更多再排序功能实体115被实施于服务无线网络控制器105。处理加强上链专用信道功能的混合自动重复要求或自动重复要求处理是被放置于各加强上链软交接节点B110内的媒体存取控制实体120中。各再排序功能实体115可与服务无线网络控制器105内的较高协议层125通信且包含一相关数据缓冲器(无标号)。
图2为软交接期间包含处理系统100中数据区块，也就是封包数据单元(PDUs)的方法步骤的处理200流程图。步骤205中，数据区块，(也就是加强上链数据区块)是从无线传输/接收单元被接收于各加强上链软交接节点B110处。步骤210中，各加强上链软交接节点B110解码被接收数据区块，且该被解码数据区块是被转送至服务无线网络控制器105。应注意各加强上链软交接节点B110将尝试解码被接收加强上链传输。当具有周期冗余检查时，除非无线传输/接收单元实体及逻辑信道/媒体存取控制-d借助其它方法已知，否则各加强上链软交接节点B110不能将被接收数据区块转送至服务无线网络控制器105。所有具有良好周期冗余检查结果的被成功解码区块均被转送至服务无线网络控制器105。
仍然参考图2，决定成功解码数据区块的至少一复本是否从加强上链软交接节点B110被服务无线网络控制器105接收(步骤215)。若步骤215中决定服务无线网络控制器105尚未接收任何成功解码数据区块的复本，则被转送数据区块系被视为尚未被正确接收(步骤220)。步骤215中，若决定成功解码数据区块的至少一复本从加强上链软交接节点B110被服务无线网络控制器105接收，则接着决定成功解码数据区块的多重复本是否从不同加强上链软交接节点B110被接收(步骤225)。
若步骤225决定成功解码数据区块的多重复本从不同加强上链软交接节点B110被接收，则仅一复本被储存于被服务无线网络控制器105中的再排序功能实体115维持的再排序缓冲器(无图标)中当作被正确接收数据区块，而任何成功解码数据区块的额外被接收复本系被抛弃为多余数据(步骤230)。
最后，步骤235中，成功解码数据区块是被服务无线网络控制器105中的再排序功能实体115处理。服务无线网络控制器105中的再排序功能实体115可执行再排序程序于这些被正确接收于再排序功能实体115中的成功解码数据区块以支持队列中传递至较高协议层125。
处理200是有助益的，因为从不同加强上链软交接节点B110被接收的数据区块可被组合及组织于队列中以传递至服务无线网络控制器105的较高协议层125。被放置于服务无线网络控制器105内的再排序功能实体115可使加强上链媒体存取控制封包数据单元被处理独立于被提供接收各封包数据单元的节点B来成功接收及正确传递至较高协议层235，导致媒体存取控制数据被降低及无线链路控制恢复。
图3显示包含依据本发明替代实施例操作的一控制无线网络控制器305及至少两个(2)加强上链软交接节点B110(110A…110N)的无线通信系统300。一个或更多个再排序功能实体315被实施于控制无线网络控制器305来支持软交接。处理加强上链专用信道功能的混合自动重复要求或自动重复要求处理系被放置于各加强上链软交接节点B310内的媒体存取控制实体320中。各再排序功能实体315可与外接至控制无线网络控制器305的较高协议层325通信且包含一相关数据缓冲器(无标号)。
图4为软交接期间包含处理系统300中数据区块，也就是封包数据单元的方法步骤的处理400流程图。步骤405中，数据区块，(也就是加强上链数据区块)系从无线传输/接收单元被接收于各加强上链软交接节点B310处。步骤410中，各加强上链软交接节点B310解码被接收数据区块，且该被解码数据区块系被转送至控制无线网络控制器305。应注意各加强上链软交接节点B310将尝试解码被接收加强上链传输。当具有周期冗余检查时，除非无线传输/接收单元实体及逻辑信道/媒体存取控制-d借助其它方法已知，否则各加强上链软交接节点B310不能将被接收数据区块转送至控制无线网络控制器305。所有具有良好周期冗余检查结果的被成功解码区块均被转送至控制无线网络控制器305。
仍然参考图4，决定成功解码数据区块的至少一复本是否从加强上链软交接节点B310被控制无线网络控制器305接收(步骤415)。若步骤415中决定控制无线网络控制器305尚未接收任何成功解码数据区块的复本，则被加强上链软交接节点B310转送的数据区块系被视为尚未被正确接收(步骤420)。步骤415中，若决定成功解码数据区块的至少一复本从加强上链软交接节点B310被控制无线网络控制器305接收，则接着决定成功解码数据区块的多重复本是否从不同加强上链软交接节点B310被接收(步骤425)。
若步骤425决定成功解码数据区块的多重复本从不同加强上链软交接节点B310被接收，则仅一复本被储存于被控制无线网络控制器305中的再排序功能实体315维持的再排序缓冲器(无标号)中当作被正确接收数据区块，而任何成功解码数据区块的额外被接收复本系被抛弃为多余数据(步骤430)。
最后，步骤435中，成功解码数据区块是被控制无线网络控制器305中的再排序功能实体315处理。其可执行再排序程序于这些被正确接收于再排序功能实体315中的成功解码数据区块以支持队列中传递至较高协议层325。
处理400是有助益的，因为假设这些节点B310具有相同控制无线网络控制器305，所以从不同加强上链软交接节点B310被接收的数据区块可被组合及组织于队列中以传递至较高协议层325。虽然其应用较放置再排序功能于服务无线网络控制器105中有些严格，但此经常为案例。然而，此限制是被其它考量抵消。例如，服务无线网络控制器操作的利益是降低混合自动重复要求操作的延迟。最小化此延迟的效能利益被熟知于技术领域中。软交接期间，亦预期控制无线网络控制器305中具有用于包含被不同节点B310控制的信元的主动加强上链子集中的所有信元的共享上链调度器。
虽然本发明已参考较佳实施例特别显示及说明，但熟悉本技术人士应了解只要不背离上述本发明范畴，均可作各种型式及细节的改变。

Claims (7)

1.一种无线通信系统，该无线通信系统包括：
多个节点B，其中所述节点B位于活动集中，每个节点B包括：
接收器，被配置成经由一个或多个EU信道从无线发射/接收单元(WTRU)接收MAC PDU，其中使用混合自动重复要求(HARQ)协议接收所述MAC PDU；
调度器，被配置成调度来自所述WTRU的增强上行链路(EU)传输；及
发射机，被配置成向无线网络控制器(RNC)发送成功接收到的MAC PDU；以及
所述RNC，包括：
再排序功能实体，被配置成接收来自所述活动集中的所述多个节点B中的成功解码媒体存取控制(MAC)封包数据单元(PDU)的每一节点B的MAC PDU，抛弃从两个或更多个节点B接收到的所述MAC PDU的复本，基于所述MAC PDU的序列号将所述MAC PDU再排序至关联的缓冲器中的队列中，以使得所述队列中的MAC PDU包括从所述活动集的所述两个或更多个节点B成功接收到的MAC PDU并且仅仅单个MAC PDU的复本被存储在所关联的再排序缓冲器中，及将再排序的MAC PDU传递至无线链路控制(RLC)协议层，其中经由一个或多个增强上行链路(EU)信道在所述多个节点B的每一者处接收所述MAC PDU；及
公共上行链路调度器，被配置成协调所述活动集的所述多个节点B之间的EU调度。
2.根据权利要求1所述的系统，其中所述RNC为服务RNC(SRNC)。
3.根据权利要求1所述的系统，其中所述RNC为控制RNC(CRNC)。
4.一种在无线通信系统中使用的方法，该方法包括：
经由一个或多个EU信道在多个节点B处接收来自无线发射/接收单元(WTRU)的MAC PDU，其中使用混合自动重复要求(HARQ)协议接收所述MAC PDU；
在所述多个节点B处调度来自所述WTRU的增强上行链路(EU)传输；
从所述多个节点B向无线网络控制器(RNC)传输成功接收到的MACPDU；
在所述RNC处接收来自所述多个节点B中的成功解码媒体存取控制(MAC)封包数据单元(PDU)的每一节点B的MAC PDU；
在所述RNC处抛弃从两个或更多个节点B接收到的所述MAC PDU的复本；
在所述RNC处基于所述MAC PDU的序列号将所述MAC PDU再排序至关联的缓冲器中的队列中，以使得所述队列中的MAC PDU包括从所述两个或更多个节点B成功接收到的MAC PDU并且仅仅单个MAC PDU的复本被存储在所关联的再排序缓冲器中；
在所述RNC处将再排序的MAC PDU传递至无线链路控制(RLC)协议层，其中经由一个或多个增强上行链路(EU)信道在所述多个节点B的每一者处接收所述MAC PDU；
在所述RNC处协调所述多个节点B之间的EU调度。
5.根据权利要求4所述的方法，其中所述节点B位于活动集中。
6.根据权利要求4所述的方法，其中所述RNC为服务RNC(SRNC)。
7.根据权利要求4所述的方法，其中所述RNC为控制RNC(CRNC)。
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US7206581B2 (en) 2007-04-17
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US20050255823A1 (en) 2005-11-17
CN104796236A (zh) 2015-07-22
AR048658A1 (es) 2006-05-17
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